CVE-2026-40606

medium

mitmproxy is a interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers and mitmweb is a web-based interface for mitmpro…

Vendor / product: Mitmproxy — mitmproxy

mitmproxy is a interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers and mitmweb is a web-based interface for mitmproxy. In mitmproxy 12.2.1 and below, the builtin LDAP proxy authentication does not correctly sanitize the username when querying the LDAP server. This allows a malicious client to bypass authentication. Only mitmproxy instances using the proxyauth option with LDAP are affected. This option is not enabled by default. The vulnerability has been fixed in mitmproxy 12.2.2 and above.

CVSS

4.8

4.8 (CVSS v3.1)

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Severity source: NVD CVSS v3.1 (security-advisories@github.com)

Timeline (UTC)

Published: 2026-04-21 18:16

Modified: 2026-11-11 23:10

NVD status: Analyzed

Last synced 3 hours ago

Verified against the source API 2026-11-11 23:12 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

mitmproxy / mitmproxy <12.2.2

Weakness classification (CWE)

CWE-90

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://github.com/mitmproxy/mitmproxy/security/advisories/GHSA-527g-3w9m-29hv

References

https://github.com/mitmproxy/mitmproxy/security/advisories/GHSA-527g-3w9m-29hv security-advisories@github.com

Data sources

NVD CVE API 2.0 — fetched 2026-11-11 23:12 UTC · record ↗

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